Approximate Equations for the Reflection Coefficient from a Homogeneous Quarter-Wavelength Radar Absorbing Layer

A theoretical and numerical investigation of the quality criteria for radar absorbing coatings (RACs) has been conducted. Simple analytical expressions for the minimum of the reflection coefficient of a homogeneous absorbing layer have been obtained. It is shown that this value is not a correct char...

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Bibliographic Details
Published inMoscow University physics bulletin Vol. 78; no. 4; pp. 470 - 477
Main Authors Shiryaev, A. O., Rozanov, K. N., Petrov, D. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.08.2023
Springer Nature B.V
Subjects
Absorption
Broadband
Mathematical analysis
Mathematical and Computational Physics
Physics
Physics and Astronomy
Radar
Radar absorbers
Reflectance
Theoretical
Thickness
radar absorbers
microwave permeability
composite materials
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Summary:A theoretical and numerical investigation of the quality criteria for radar absorbing coatings (RACs) has been conducted. Simple analytical expressions for the minimum of the reflection coefficient of a homogeneous absorbing layer have been obtained. It is shown that this value is not a correct characteristic of radar absorption. To describe the quality of RACs, it is necessary to use either the relative bandwidth of its operating waveband or the ratio of the operating waveband to the layer’s thickness. The former of these quantities may be useful when it is important to achieve a high broadband absorbency, while the latter is useful for achieving a small thickness of an absorber.
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134923040161